00289nam a2200121Ia 45000030006000000080041000060400015000471000016000622450032000782600028001105460012001380050017001500STCL150530s9999    xx            000 0 und d  aSTCLcSTCL  aGupta, R.C.  aViva-voce in physics Vol II  bPragati Prakashanc1991  aEnglish20220125170116.0